A regulated source supplies two differently sized pipes through valves and flow meters before they rejoin at a delivery manifold. Closing one valve changes its branch discharge; both branches use the same total head difference.
• 3D scene parts: Regulated source vessel; a pipe, valve and meter; b pipe, valve and meter; rejoining manifold; delivery receiver. • Controls: Available head difference (2–30 m); Branch A diameter (0.15–0.8 m); Branch B diameter (0.15–0.8 m); A valve loss coefficient (0–40); B valve loss coefficient (0–40); Fixed Darcy factor (0.015–0.05). • Live readouts: Branch A flow (m³/s); Branch B flow (m³/s); Delivery flow (m³/s); A velocity (m/s); B velocity (m/s); Branch head mismatch (m). • Guided experiments: Throttle A; Enlarge B; Low available head. • Four tabs (visual laboratory, curves and measurements, experiments, learn and assess), a model-verification run, a timestamped event log and a trial report.
HA=HB=available ΔH ΔH=(f L/D+Kvalve+2) V²/(2g) Q=πD² V/4; Qdelivery=QA+QB
Two parallel full pipes with fixed Darcy friction factor and 2 units of fixed minor-loss coefficient per branch. No water hammer, pipe elasticity, pressure-dependent demand or general network iteration. Head is regulated; source depletion and shared-header losses are omitted. Try the preset experiments, then compare the live readouts with the equations.
Yes. They connect the same upstream and downstream head nodes.
No. Their different resistance sets their different flows.
Two parallel full pipes with fixed Darcy friction factor and 2 units of fixed minor-loss coefficient per branch. No water hammer, pipe elasticity, pressure-dependent demand or general network iteration. Head is regulated; source depletion and shared-header losses are omitted.